my sister takes a lot of nude pictures!!!!

It's so annoying that my 16 years old sister takes nude pictures of herself.. her phone is full of them!!! That's absolutely disgusting... she's too young to be living her life like this!! Would it be out of my place to confront her about this? We are from a strict Christian family and have been brought up with morals so yes it's my business!!!!! Do you know how hurtful it is seeing your sister go down this path!